Riddle: You have 12 pills and they all got the same weight, except for one, which hasn't got the same weight. You don't know if it is heavier or easier. You have one scale to weight the pills. You now have to find out, which pill is the right one (the one with a different weight), but you can use the scale only three times. How do you know, which one is the right one?
Answer: E=easier in "1", H=heavier in "1".
1: Weight 4:4. If they balance go to "2", if they don't balance, go to "3".
2: Balance 1:1 of the pills you didn't weight yet. Then weight one you didn't weight and one you did weight. If they balanced in the first weighing, and balanced in the second weighing, the last pill is the right one. If they balanced in the first weighing and dind't balance in the second, the one you didn't use before is the right pill. If they didn't balance at all, it's the pill you weighed twice. If they didn't balance in the first weighing, but balanced in the second, it is the first pill.
3:Weight EHH:EHH. If they balance, weight one you already weighed, with an unweighed and go to "4". If they don't balance go to "5".
4: If they balance, the one you didn't weight at all is the right pill. If they don't balance, the one you only weighed once is the right one.
5: Give away every pill that was once easier AND once heavier. You should only have EHH left. Weight H:H. If they balance, E is the right one. If the don't balance, the one which was only heavier the whole time, is the right pill.
Halloween Riddles are hand picked Halloween Riddles for use by teachers in the classroom and for home school lessons. This halloween riddles quiz provides the option to be downloaded as a PDF or printable directly from the Halloween Riddles quiz page.
Thanksgiving Riddles are hand picked Thanksgiving Riddles for use by teachers in the classroom and for home school lessons. This thanksgiving riddles quiz provides the option to be downloaded as a PDF or printable directly from the Thanksgiving Riddles quiz page.
Christmas Riddles are hand picked Christmas Riddles for use by teachers in the classroom and for home school lessons. This christmas riddles quiz provides the option to be downloaded as a PDF or printable directly from the Christmas Riddles quiz page.
If you would like to use this content on this page for your website or blog, we only ask that you reference content back to us. Use the following code to link this page:
SUBSCRIBE TO RIDDLES
Get our Weekly Riddles Round Up sent direct to your email inbox every week!